Dust-shield for self-moving road-vehicles.



Nd. 877,083. PATENTED JAN. 21, 1908. J. (LB. INGLEBY. DUST SHIELD FOR SELF MOVING ROAD VEHICLES.

APPLICATION FILED JUNE 10,1907.

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PATENTED JAN. 21, 1908.

J. 0. B. INWGLEBY, DUST SHIELD FOR SELF MOVING ROAD VEHICLES.

APPLICATION FILED JUNE 10,1907.

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No. 877,083. PATENTBD JAN. 21, 1908.

J. OLB. INGLBBY. DUST SHIELD FOR SELF MOVING ROAD VEHICLES. APPLICATION FILED JUNE 10,1907.

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UNITED STATES PATENT onnion.

JOHN CONRAD BEDFORD INGLEBY, OF LEEDS, ENGLAND.

DUST-SHIELD FOR SELF-MOVING ROAD-VEHICLES.

Specification of Letters Patent.

Patented Jan. 21, 1908.

Application filed June 10. 1907. Serial No. 378,322.

which I have applied for Letters Patent in Great Britain, under No. 13,891 and date 18th June, 1906, and of which the following is a specification.

The object of my invention is to prevent or minimize the raising of dust by motor cars and the like, by isolating the layer of dust and air next the ground from the disturbing action of the car in passing over it by means of an isolating screen or screens, which cut bfl the layer of air next the ground from the layer of air above which is compressed in front by the oncoming car; the spaces between such screen and the under side of the car forming ducts or passages for such disturbed air to'pass to the back of the car. Also by isolating the layer of air next the ground from the disturbing eddies formed immediately at the back of the car, the screen being continued beyond the back of the car. As subsidiary, cooperating and more or less essential objects, this invention provides means for carrying and stretching the screen beneath the body of the car, for opening out and automatically closing up the rear extension or tail screen, for the purpose of avoiding coming in contact with stationary or passing objects; and for carrying the rear end of the tail screen in a floating manner, to obtain equilibrium of pressure between the layers of air above and below the screen, as the screen leaves these and they meet.

Referring to the drawings which form part of this specification :Figure 1 is a side elevation of a motor car to which my invention has been applied. Fig, 2 is a plan of the isolating screen. Fig. 3 is a side elevation of the screen. Fig. 4 is a side elevation showing the wire connections for drawing out or spreading out the tail screen. Fig. 5 is a side elevation showing the means for carrying the tail screen box, and indirectly of carrying the tail screen in a floating manner. Fig. 6 is an enlarged and more detailed drawing of Fig. 3. Fig. 7 is a longitudinal section of the front end of a carrying tube, showing the means for stretching or racking the screen. Figs. 8 and 9 are sections of the box carrying the drum for drawing out the screen, and the device for releasing the automatic mechanism for suddenly closing up the tail screen. Fig. 10 is a sectional plan of the tail screen box showing, the tail screen rolled up. Fig. 11 is a plan showing the tail screen spread or drawn out. Fig. 12 is a plan to a larger scale of one end of the tail box. Fig. 13 is an end elevation corresponding to Fig. 12.

a indicates the main dust screen, which is carried by the tubular rods 1); the latter being carried at the front and rear ends by springs d and c Fig. 5, secured to the axles. The rear end of the screen a is attached by a detachable hook connection f Fig. 6 to the tail screen box 9 at 17 Fig. 5. The front end of the said screen is drawn and kept tightly stretched, having a sprin compensation device to keep it tight in al weathers; by the following mechanism. Each end of the front board it of the screen is attached by hook connection to a bracket 1, Figs. 6 and 7 secured to the outer front end of a tube j, which fits capable of sliding within a second tube 7c, and this latter fits in and abutsby means of a collar or flange against the front end of one of the main carrying tubes 6. The tube 7' carries within it a spindle Z, the inner end of which is screwed, the screwed part engaging with a nut m secured to a tube 75. A spiral spring n'fits in the space between the spindle l and the tube 3', and bears with one end against the collar of the spindle Z and with the other end against the inside flange or bush piece at the end of the tube 3'. On rotating the screw spindle Z in one direction by means of the hand wheel 0, the spring 12 is compressed and the front end of the screen pushed forward, drawing it tight. By turning the screw spindle in the opposite direction, the dust screen may be slackened sufficiently to be unhooked and removed.

The front and back ends of the screen are narrowed to give room for the car wheels, and loose strips p may extend on the outside of the rear Wheels, with hook and eye connection f at their rear ends to the tail box g, so that they can be readily disconnected and pushed to one side to get at the wheel or tire.

The front end of the dust screen is carried forwards sufliciently to cut off the layer of air next the ground from that above it, before the oncoming car produces any sufficient difference of pressure between them to cause a disturbance of the lower layer of air. All the space between the upper side of the dust r and r are-pivoted on short spindles or, axles s and s fitted respectively at each end of thetail box. g. These tend .to, automatically, close upto the tail box as shownain Fig.10, under the influence of the springs; t: and t coiled round the axles-s and s respectively. A smallpulley u. (a is carried'by. a lug piece o,(u );attached to or formed on each:arm.- rr

vnear its hinged end; anda-second small pulley, 'w' (w) iscarriedby, the-arm r (r) at a. somewhat greater distancefromjtshin-ge A thirdsmall pulley :0 (x .herein.termed-th6 guide-pulley, is carried in fixed bearings-near eachof theouter front endsof the tail box.

The outer free end ofieacharm also carriesa. guide pulleyy (g5).

zis a tube'to which the'freeend ofthe tail dust screen is attached. A longcord 1 passesfrom the winding. drum 3, to be directly; referred, to,,round1one of the guide pulleys-2 at, thecenterof thetailbox, round the guide pulley ac, then pasttheouter side of the puley u, and the inner side of the pulley w, to the pulley y carriediat-thefree end of the hinged arm 1:; thenathrough the tube 2 to the ,ulley 'y at-theend of the other pivoted sprear ingvarm.

T and backin a reverse order round the COITG": spondingpulleys w u 9& and 2 a to the winding drum 3. The windingdrum 3, see Figs, 8 and9, winds-up bothiends of the cordsimultaneously, andlets them out simultaneously.

It will be seen Fig. lOthat when thewinds ingdrum commences to wind in the cord or wire 1, a pressureis exerte dfirstron theaxis of thepulley u and afterwardson the pulley, w,

v thus turning the arm 7" round omits-pivot, to

openit againstthe closing'tendency ofthe spring -t; the arm finally taking the positionshown in Fig. 11. theicord or wire 1 still further, the tube 2, and

with it the free endof the-tail dustscreenare drawn forward from the stops 20,- unrolling and drawing out the screen 0 from the spring roller q, against: the closing tendency of the roller spring. until the tube 2 comes up to .the free ends-of the arms 1" T or. in other WOIdS,:11Il'Dll the tail dust screen is drawn or spread out to its-full extent.

On slackeningback or uncoiling the wire or rope 1 from the winding drum 3 the tail dust,v

screen is rolled u under the influence ofthe roller spring, anc afterwards the arms r r Onpullingor winding up The drawing out is continued f wheel 5, see Fig. 4, by meansof the drum spindle 6, annular ratchet 7-,. actuated through: the spindle 6, and fixed: annular ratchet 8-,attachedto .the-windingdrumcase. Springs-9 and 11 keep'the spindle- 6 and rack-j 7 pressed. towards LthGIaCilQ 8. By; means of a releasebutton 10jonthe end of the spindle '6, the rack 7' can bedrawnforward against.

the "pressure, of the spring 9 and out of con tact of the rack,8, thus releasing-the winding; drum; so that the tensions of the roller: spring; and of the pivotspringsyt, 79, off the arms 1" T are *fI'GGzllO act, and-instantaneously roll up the tail screencgand fold in thearm's r'r out, of the way of anyv stationary or passingobject; Itwillbe-noticed'that-when the. release button10 is pulled forward to release the folding up mechanism, that the'springs 9 and 11' are.compressediandforce the winding drum- 3. against theend'of the leasing, and

acting as a brake "preventsthe folding. up takingplace too-violently. A C-spring 12,,

the ends of which press v against-the lugs 13 and 14 on the catchplate-7; and drum 3 respectively, acts as a; cushion to prevent breakage of the jteethof the annularratchets- Tand 8.

The'tail box, 9. may. be--carried on spring hinges attached: top its lower-.- corner. front, edge, or by fiat springse Fig, 5; the-springsebeing-securedto the rear axle 16, and. to thelower-front corner edgeofthetail box gvby meansof apfivot 17 This pivot, 17, alsocarries the tubular; rods 7) and themain-screen a by means of the hook f; while thesprings 15 layers of air above andibelow the-screentowith a dust-screen consisting of a frame and a covering of fabric which is suspended below the bottom of said vehicle and serves to cut off the air between said screen and the ground from the air between said screen and the bottom of the vehicle body, substantially as and for the purpose set forth.

2. A self moving road vehicle, provided with a dust screen which is suspended below the bottom of said vehicle and serves to cut off the air between said screen and the ground from the air between said screen and the bottom of the vehicle body, the said screen consisting of a frame and flexible fabric supported thereby and provided with means for drawing it taut substantially as set forth.

3. A self moving road vehicle provided with a dust screen which is suspended in horizontal position in the space between the bottom of said vehicle and the ground and extends horizontally out behind the said vehicle, the said screen consisting of a frame and flexible fabric thereon, the same being provided with means for making said fabric taut substantially as set forth.

4. A self moving vehicle provided with a dust guard suspended substantially in horizontal position between the bottom of said vehicle and the ground and extending be yond the rear of said vehicle.

5. A self-moving road vehicle provided with an expansible and contractible dust screen, below the body of the vehicle, in combination with means for expanding and contracting the same, a rearward extension of said screen beyond the vehicle body, forming a tail dust screen which is expansible and contractible and means for contracting or expanding at will the said tail dust screen, for the purpose set forth.

6. In motor cars and similar road vehicles, the combination of a main isolating screen, means for carrying the same tightly stretched beneath the car at a short height above the ground, a rear extension or tail screen extending rearwardly beyond the rear end of the main screen, means for spreading out said tail screen and means for automatically and instantaneously rolling and closing up said tail screen, for the purposes specified.

7. In a motor car or similar road vehicle; the combination of an isolating screen a,

side rods 6, carrying springs d, e and 15, and stretching and automatic compensating device at the front ends of said carrying rods for the purposes specified.

8. In a motor car or similar road vehicle;

the combination of two fixed wheel axles, a

main isolating screen a, side rods 1), flat carrying springs 61, e and 15, telescopic and screw stretching or racking mechanism and spring compensating device, all substantially as illustrated and for the purposes specified.

9. In a motor car or similar vehicle provided with an isolating screen below the body of the car; the combination of an inner tube 9', to which the front end of the screen a is attached, stretching or racking screw 1 and compensating spring n within the tube j, an intermediate tube 7r with nut m engaging with said screw Z, and fixed outer tube 1), all substantially as and for the purposes specified.

10. In a motor car or similar vehicle the combination of a tail screen, tail screen box, spring floating support, means for spreading or drawing out'the screen, and for retaining the same in the spread or drawn out position, automatic folding or closing up mechanism and releasing mechanism, for the purpose or purposes set forth.

11. In a motor car or similar vehicle; the combination of a fixed axle 16, suspension springs e and 1.5, side carrying rods b, tail box g, and hinged levers 1" T and tail screen 0, for the purposes specified.

12. In a motor car or similar vehicle; the combination of a tail screen 0, tail box 9, spring roller 9, pivoted spreading arms 1" 1", side lugs '0 c guide ulleys 'u, 14 ,21 w 00 x and 2 and 2 and c osing springs t and t flexible wire or cord 1 and winding drum 3, 

